Dissemin is shutting down on January 1st, 2025

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SAGE Publications, Veterinary Pathology, 6(53), p. 1248-1251, 2016

DOI: 10.1177/0300985816638720

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Myopathy of the Pipping Muscles, Hepatosis Dietetica, and Cataracts in Emu Chicks (Dromaius Novaehollandiae)

Journal article published in 2016 by M. Crispo, C. Palmieri ORCID, H. L. Shivaprasad
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Seven emu chicks ( Dromaius novaehollandiae) from a farm with poor hatchability (16–18%) and increased neonatal mortality were presented for necropsy with a history of death at or within a few days after hatching. Macroscopic examination revealed subcutaneous edema and hemorrhages and swelling of the pipping muscles in the proximal neck (71%), pale liver with hemorrhages (71%), noninternalized residual yolk sac (86%) and anasarca (14%). Histologically, the most remarkable findings were necrosis of the musculus complexus (100%) of the pipping muscles, as well as myocardial necrosis and mineralization (29%). Liver contained severe multifocal hepatocellular necrosis and hemorrhages (57%), and both eyes exhibited swollen and vacuolated lenticular fibers in 5 chicks (100%) in which the eyes were examined. The lesions observed here are suggestive of a nutritional deficiency. The deficiency was confirmed by finding low levels of vitamin E in the liver, and vitamin E and vitamin A levels in the feed.